first pass on adding support for more material types
added first support for creating cameras
previews for cameras, create camera menu, camera helper visual guide, a few new utility behaviors, new camera icon, much work to reduce memory chrun. Not much progress there
fixed several small GUI bugs. Script editor prevents scripts on scene, scene has DisplayName, several editor panels show selected name more clearly, status bar show selection info, fixed bug where you had to reselect new sub-asset objects before you could edit them
Merge remote-tracking branch 'remotes/origin/material_types' into node_threejs
support for videos as textures